david hareva

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Capturing Smoker in Non-Smoking Room

Proceedings of the 2019 3rd International Conference on Advances in Artificial Intelligence

In developing countries legal actions regarding violations of smokers in non-smoking areas are st... more In developing countries legal actions regarding violations of smokers in non-smoking areas are still weak. This will be very disturbing especially those who care for their own health. Eastern cultures are generally reluctant to treat smokers who violate the rules directly. Therefore, other methods are needed, such as creating a set of cigarette smoke detection systems that can warn smokers not to do it in a place that is forbidden to smoke. This device is expected to detect cigarette smoke, then at the same time take photos of suspected smokers as evidence of violations. Warnings will be carried out by authorized persons, if the alarm signal of cigarette smoke is not also heeded. The device consists of NodeMCU, MQ-2, piezo speakers, and ArduCAM OV2640. When the device detects cigarette smoke, it will push a beep sound, capture images of the room, and immediately send images to the Cloud database. A few moments later the mobile phone supervisor of the room will get a proof of the incident and immediately take an action to reprimand and arrest the perpetrators. The testing of cigarette smoke detection devices was carried out in a cardboard room with a volume of 50cm x 50cm x 75cm. Detection was carried out at 4 different points from the source of cigarette smoke each of 6 x experiments or 24 x experiments. It was found, that the speed of detection of cigarette smoke was achieved on average 14.4 seconds with the device located above the source of cigarette smoke (75cm).

Adaptive Cooling System for Comfortable Learning

2022 Seventh International Conference on Informatics and Computing (ICIC)

Design of Blind Community Assistance Devices with Indoor Positioning System Technology

2022 Seventh International Conference on Informatics and Computing (ICIC)

Air quality monitoring at Pelita Harapan university using the MQ-135 sensor

Proceedings of the 3rd International Conference on Telecommunications and Communication Engineering

Problems with air pollution due to household waste, use of ammonia, combustion of motor vehicles,... more Problems with air pollution due to household waste, use of ammonia, combustion of motor vehicles, cigarette smoke and so on can affect air quality in Campus. The change of air quality can be known by using a gas sampler, however it has not been able to measure the air quality and record the data in real-time manner. For providing the air quality real-time and accessible online, we have established a compact device to measure air quality using the MQ-135 sensor Arduino based. The developed three of devices were carried outside of the campus's building to measure air quality at three specific area simultaneously. The number of data samples received by each device within 1 hour is 12 data. All data is sent from the devices to a web server. All information is accessible online by anyone who has a portable device. Air quality data has been collected for 5 consecutive days on 08-12 August 2018 at 09.00-14.00 West of Indonesia Time. The result indicated that the air quality in those three areas included in the medium category with ranges of air quality value in 51-100 ppm. This device can carry out its functions, such taking the air quality values per category, in differ location, with graphical form, and provide real-time information. It has a compact shape that need right material for outside and suitable power supply.

Simulating Video Capturing for Phacoemulsification Surgery Using Aftermarket Cameras

Proceedings of the 2nd International Symposium on Computer Science and Intelligent Control

The main purposes of picture archiving systems produced by medical imaging modalities is used for... more The main purposes of picture archiving systems produced by medical imaging modalities is used for diagnosis and research purposes, include in eye surgery field. In doing modern surgery such ophthalmologic, doctors operate eye's internal lens, which is small objects, so they are prone to making mistakes. The postoperative procedure is required to evaluate the intervention results. The microscope ophthalmologic surgery equipment uses trinocular which can be installed with a digital camera to record intervention activities for reflective purposes. In this study besides using that main digital camera, we explore the possibility to employ one or more aftermarket digital cameras, such as smart phone or action camera. Close-Up lens will also be used for increasing the object image obtains by the cameras. The uses of aftermarket cameras give beneficial for mobile operation-theatre or application in the rural area. The objective of this exploration is to get insight about the possibilities and functions of this kind of cameras, whether it may effectively be used. We used an image of eye rather than real eye. The results show that combining camera with close-up lens helps to obtain bigger size of images/videos although some further improvement is still required.

Companion: Mental Health Mobile Applications for Students

2022 1st International Conference on Technology Innovation and Its Applications (ICTIIA)

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Perancangan Aplikasi Personal Trainer pada Perangkat Mobile untuk Mendukung Latihan Kebugaran

Fitness atau latihan kebugaran telah menjadi salah satu olahraga yang populer saat ini. Melakukan... more Fitness atau latihan kebugaran telah menjadi salah satu olahraga yang populer saat ini. Melakukan fitness dengan cara yang tidak tepat serta tidak adanya pencatatan terhadap aktifitas fitness yang dilakukan, merupakan dua faktor yang menyebabkan latihan yang dilakukan menjadi tidak efektif dan teratur. Kedua faktor tersebut menyebabkan orang yang melakukan oleh raga fitness tidak atau belum juga memperoleh hasil sebagaimana yang diharapkan meskipun telah mengikuti kegiatan ini selama kurun waktu tertentu. Pengelola pusat latihan kebugaran pada umunya sudah memberikan solusi bagi masalah tersebut yaitu dengan menyediakan fasilitas personal trainer bagi mereka yang ingin didampingi dalam melakukan latihan. Namun untuk mendapatkan fasilitas seperti ini, tentu saja ada dana tambahan yang perlu dikeluarkan. Solusi yang diajukan dalam penelitian ini adalah perancangan aplikasi pendukung latihan kebugaran yang dapat dijalankan pada perangkat bergerak, khususnya smartphone yang menggunakan ...

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The Office Room Security System Using Face Recognition Based on Viola-Jones Algorithm and RBFN

INTENSIF: Jurnal Ilmiah Penelitian dan Penerapan Teknologi Sistem Informasi, 2021

The university as an educational institution can apply technology in the campus environment. Curr... more The university as an educational institution can apply technology in the campus environment. Currently, the security system for office space that is integrated with digital data has been somewhat limited. The main problem is that office space security items are not guaranteed as there might be outsiders who can enter the office. Therefore, this study aims to develop a system using biometric (face) recognition based on Viola-Jones and Radial Basis Function Network (RBFN) algorithm to ensure office room security. Based on the results, the system developed shows that object detection can work well with an object detection rate of 80%. This system has a pretty good accuracy because the object matching success is 73% of the object detected. The final result obtained from this study is a prototype development for office security using face recognition features that are useful to improve safety and comfort for occupants of office space (due to the availability of access rights) so that not...

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Supportive intervention system for behavioral modification using mobile phone

User Experience dan Antarmuka Pengguna Berbasis Audio pada Aplikasi Blindness Guidance

Format Jurnal Ilmiah Teknik Informatika, 2022

Aplikasi blindness guidance merupakan sebuah sistem yang dirancang untuk membantu orang- orang tu... more Aplikasi blindness guidance merupakan sebuah sistem yang dirancang untuk membantu orang- orang tunanetra agar dapat mencapai lokasi tujuan dengan aman. Sejauh ini, orang-orang tunanetra tidak dapat menggunakan sistem untuk bernavigasi seperti Google Maps karena sistem-sistem tersebut tidak mengintegrasikan fitur-fitur esensial seperti tampilan pengguna (User Interface) yang sesuai dengan keterbatasan pengguna untuk dapat memberikan peringatan dan informasi yang dapat membuat pengguna menjadi lebih aman. Tampilan pengguna atau User Interface yang dibuat akan dilengkapi dengan fitur text-to-speech maupun speech-to-text sehingga pengguna tunanetra dapat melakukan komunikasi langsung tanpa kesulitan yang disebabkan karena keterbatasannya. Platform Google Maps akan diintegrasikan di dalam sistem ini. Tampilan yang dibuat akan diuji dengan melontarkan 14 pertanyaan ke 6 responden yang dirumuskan berdasarkan 6 aspek. Aspek-aspek yang dimaksud adalah: attractiveness, perspicuity, e...

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Methods on recording high-quality multiple point of view video of ophthalmic surgeries

Proceedings of the 3rd International Conference on Telecommunications and Communication Engineering, 2019

Recording a surgery helps not only surgeons during evaluation to improve their skills, but also s... more Recording a surgery helps not only surgeons during evaluation to improve their skills, but also students in getting additional lesson materials regarding surgery. A multiple point of view recording helps to capture the whole surgery, not only the operated eye but also the doctor's hand movement and the room's environment. To determine which device can produce the clearest video, the resulting videos from each device were filtered with Laplacian method from OpenCV library. The higher variance a video produces, the better the result. From the experiment, video recorded on Samsung Note 8 has the best result, compare to other smartphones and mirrorless camera. Device placement also matters, as it determines how clear the object will be captured in the video. In case of two devices capturing the same object, the placement angle does not have to be the same, as long as the object can be clearly captured. The placement height, however, increases visibility and clarity of the captured object.

Multi Point-of-View Video Recording for Eye Surgery Setting

Proceedings of the 2019 3rd International Conference on Advances in Artificial Intelligence, 2019

Reflection of post-ophthalmic surgery is needed to evaluate the results of that intervention in c... more Reflection of post-ophthalmic surgery is needed to evaluate the results of that intervention in case of deviation. The recording technique used is utilizing cameras in the mode of multi-focus and multi-points on the object's eyes (macro view), surgeon hands (middle view), equipment and the people involved (wide view). We found mirrorless camera can achieve great result for macro view when placed over the camera adaptor. Smartphones suited the middle view position, while action camera is best used for wide view recording, and OBS Studio can be used to record all videos simultaneously. Regarding to video transmission, HDMI interface has better speed and video quality, but USB is easier to assemble. All recorded video is saved in video server to be proceed in During reconstruction, TILUplayer fulfills all requirement for playing video during postoperative evaluation.

Mobile Baby Monitoring: Pendekatan Praktis Menggunakan Virtual Network Computer

The purpose of having baby monitoring is to keep babies under surveillance even though they are n... more The purpose of having baby monitoring is to keep babies under surveillance even though they are not within close reach of their guardian. Its technology generally uses camera products such as Closed-Circuit Television (CCTV), Personal Computer, or Smartphone for monitoring by detecting abnormalities such as: sound, certain motions, and respiratory changes. The development of mobile technology allows baby monitoring to be made using two smartphones. The proposed system has implemented the concept of Virtual Network Computing (VNC server) with Remote Frame Buffer protocol (RFB) for pair-communication in video streaming. Major function of baby monitoring is to provide Alert function likes phone call and short message based on sound detection. Configurations data such as interval sound detection, threshold of sound intensity, phone numbers, and histories data like direct phone call, short text messages, images, and videos is stored on Web Server host. For this early study, there was onl...

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Pendeteksian Tali Pusat Pada Janin Dengan Metode Contour Tracing

Tali pusat janin pada saat pemeriksaan menggunakan ultrasound modality tidak selalu mudah untuk d... more Tali pusat janin pada saat pemeriksaan menggunakan ultrasound modality tidak selalu mudah untuk dilakukan. Padahal posisi tali pusat diperlukan saat persiapan ibu hamil menjelang kelahirannya. Salah satu kendalanya adalah citra yang dihasilkan oleh ultrasound tidak begitu jelas. Hal tersebut dapat diperbaiki menggunakan pengolahan citra digital untuk meningkatkan kualitas citra ultrasound agar tali pusat dapat dikenali secara langsung oleh komputer. Untuk tujuan tersebut diperlukan 6 tahap dalam pipeline pengolahan citra, yaitu tahap Image Acquisition, tahap Image Enhancement, tahap Image Segmentation, Contour Tracing untuk mendapatkan daerah tali pusat, tahap Image Morphological untuk memisahkan daerah tali pusat dengan badan bayi, dan tahap Classification untuk menampilkan tali pusat. Aplikasi tersebut dibangun dengan bahasa pemrograman C++ dengan OpenCV library. Hasil pengujian dengan metode contour tracing dibutuhkan citra ultrasound dengan warna antara bayi dengan tali pusat ...

Determination of female fetus using to-zero threshold and template matching

2016 International Conference on Informatics and Computing (ICIC), 2016

fetus gender detection that is normally done by obstetricians has its own complication. Posibily ... more fetus gender detection that is normally done by obstetricians has its own complication. Posibily reasons are the poor image resolution on ultrasound screen or doctor experiences. Previous study has examined the computer application for recognizing the male gender with five stages in the detection method, which are enhancement, segmentation, and template matching. Now for detecting female sex is included. The unique characteristics of female fetus are three white lines. These characteristics can be detected by using to-zero thresholding and binary thresholding. All the testing will be conducted by 10 times for 10 female samples of image ultrasound. The obtained samples come from several online media. The sample requires sexual organ which visually apparent (vulva, labia, and clitoris). As a result, application could detect 6 samples from 10 female samples. The percentage of success could be improved when using sample comes from the same type of ultrasound device.

Optimalisasi Penggunaan Pendingin Ruangan Sistem Kelas Cerdas

Optimizing the use of electronic devices such as air conditioning is very important to avoid high... more Optimizing the use of electronic devices such as air conditioning is very important to avoid high costs due to the use of electricity in classrooms. This can be done by regulating its use only when the classroom is in use. There are two sufficient conditions to arrange it, namely when there is a teaching schedule and there are students in the class. By utilizing IoT technology, a cooling control system to regulate electricity usage such as air conditioning can be done. The IoT device used is a laser sensor or PIR to detect the presence of people, temperature, and humidity sensors, infrared sensors to turn the cooling system on or off. All sensors are connected to the Arduino microcontroller which forwards the collected data to the Firebase database via the internet. Android smartphones are used to embed smart class applications that control the cooling system control configuration, monitor, and view the history of cooling system usage via data stored in Firebase. When creating a cla...

The Used of Video Tracking for Developing a Simple Virtual Boxing

Now, video tracking is a feature that used a lot in computer gaming. This feature makes games mor... more Now, video tracking is a feature that used a lot in computer gaming. This feature makes games more interesting because it offers direct interaction between the player and computer while in the same time player can exercise his/her body and eye coordination. For this reason, implementing video tracking in virtual boxing is a challenging task. Compared to the standard computer game controllers, controlling game using video tracking is more appealing and attractive. The aimed is to explore the used of video tracking at developing a simple virtual boxing. In this study the used method for detecting object such punch types was a Mean-shift method. This detection was done based on the moving area of the object’s surfaces, thus this information could be used to differentiate punches type, which is classified as Jab, Hook, and Uppercut. The making of Virtual Boxing comprises of video tracking development and gaming design. This development of virtual boxing involves a number of configuratio...

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Implementation of Iridology Application on Smartphone

Iridology is alternative medicine for predicting human health condition through film/digital iris... more Iridology is alternative medicine for predicting human health condition through film/digital iris image. Several researchers have developed an Iridology application on personal computer to substitute their manual method. Now Smartphone device is very popular. It has attributes of portability, economic value, and easy to use. Implementation of Iridology application on Smartphone is great chance to support remote areas where accessing to healthcare services still a main issue. The proposed application use Canny Edge Detection to detect a specific area on the digital iris image, Texture Future Analysis to analyze the specific area of iris, and Artificial Neural Network to learn and predict health condition. For this study, the cases of health prediction are limited to heart disease, lung disease, spleen disease, and liver disease. The eye images of 32 samples that have indicated diseases according to Iridologist are tested. Result comparison to Iridologists: 95% for heart disease, 90% ...

Development of real-time biological data collection system using a cellular phone

SICE Annual Conference 2007, 2007

In order to collect biological data of human in real-time, we developed biological data collectio... more In order to collect biological data of human in real-time, we developed biological data collection system (BDCS) using a cellular phone. The BDCS consists of EMA system and biological measuring devices (BMD) system. In this study, the EMA system was implemented to obtain subject behaviors and feelings related sleep around two weeks and BMD to obtain biological data such as snoring, skin impedance, pulse wave, and event during sleep over a night. Some factors as consequence of uncomfortable sleeping that related with breathing, sleep stressed, blood pulse wave, and awakening can be seen on the web. The BDCS could be useful for physicians to obtain adequate information that related with uncomfortable sleep in the real time.

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